I just got out my slightly used SSM Glamour Aspide to check and the padding is definitely firmer than the Donna. It's just a little wider at the widest point and shorter overall (because the Donna ends in sort of a point in back) but the taper from the widest part to the nose is pretty similar. The channel is slightly more pronounced at the nose end of the Donna. The SSM GA flexes side to side quite readily. I tried it pretty early on after I took up cycling and felt too much pressure up front. It's a nice enough saddle that I thought should try it again after I gained some more experience. I know my core strength is much improved so maybe I will one of these days.